Marcus Lemonis says don’t sell, it may be the next big thing!

Flat Out of Heels sells rollable ballet flats for women. CEO Dawn Dickson launched the Miami-based company in 2012, and the product has been selling like crazy ever since. She even started a second company to build vending machines to sell them.

Demand was high, but Dickson didn't have the money to keep the shoes in stock.

"I can sell out my product," she said. "I just need to have it on hand all the time. That's a tough pill to swallow, when the reason you're not making money is because you don't have the product."

After receiving several large orders, including one for 10,000 pairs, she began desperately searching for funding. Eventually, she received what seemed like an impressive offer -- a large retail company wanted to buy the brand.

Dickson would have stayed on as CEO for two years, as well as, retaining the vending machine company, and she still would have been able to sell her own shoes.

"It seemed like a great opportunity for Flat Out to grow as a brand and receive all the capital that it needs to grow," Dickson said. But Marcus Lemonis of CNBC's "The Profit" said she had the energy and passion to stay at the helm. He advised her not to sell the company, no matter how badly she needed the cash.

Lemonis added that Dickson should choose wisely as well, and only take money from an investor who could open a door to business that she couldn't open on her own. She was also advised against asking for $1 million for the shoe line, as the mere mention of that dollar figure had the potential to make her equity go down significantly.

Armed with that insight, Dickson is currently searching for the right type of investor for her company.